Why doesn't this rupture your eardrum?

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Discussion Overview

The discussion centers on the mechanics of the eardrum and the effects of applying pressure to the ears, particularly in the context of equalizing ear pressure during a head cold. Participants explore the conditions under which eardrums might rupture and the physiological processes involved.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant describes the eardrum as a thin membrane and questions why it does not rupture when pressure is applied during attempts to "pop" the ears.
  • Another participant suggests that while it is possible to burst eardrums with excessive force, the popping sensation typically indicates equalization of pressure in the middle ear with the external atmosphere.
  • A different perspective notes that blowing with a closed nose increases pressure relative to lung pressure rather than external pressure, and that this action can help clear blockages in the eustachian tube.
  • A participant inquires about the healing process of a ruptured eardrum and whether it leads to deafness.
  • One response confirms that ruptured eardrums usually heal on their own.

Areas of Agreement / Disagreement

Participants express differing views on the mechanics of pressure equalization and the potential for eardrum rupture, indicating that multiple competing views remain without a consensus on the specifics of the process.

Contextual Notes

Some assumptions regarding the pressure dynamics and the physiological responses of the eardrum and eustachian tube remain unresolved, as do the conditions under which a rupture might occur.

Thecla
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The eardrum is a very thin membrane separating the middle ear from the outer ear. When I try to "pop" my ears when I have a head cold by closing my mouth , pinching my nose and applying pressure from the throat side why don't my eardrums rupture? When I do this I hear some liquid moving around,but nothing happens to my eardrum. Aren't these drums very thin and delicate and vulnerable to a pressure blowout?
 
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I believe you can actually burst your ear drums if you do this violently enough. Normally though that popping sensation occurs when the pressure in the middle ear has been equalised with the outside atmosphere. The eustachian tube connects the back of the throat with the inner ear and usually is closed, when you hold your nose and blow (or yawn or a few other things) you open them up and equalise the middle ear.
 
If holding your nose and blowing opens the eustacian tube, that increases the pressure (equalizes with respect to the pressure you are creating in your lungs, not with outside pressure). Indeed, that's why you do it when scuba diving. My understanding is that the act clears blockages, which then allows pressure to equalize after you release the action.
 
Thanks for the information. Does a burst eardrum heal itself,or do you become deaf in one ear.
 
Yes, ruptured ear drums usually heal.
 

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